YGV638 Datasheet, PDF (3/26 Pages) YAMAHA CORPORATION – a pattern graphic controller with an on-chip VRAM and the ample drawing performance enables high-resolution animated GUIs on WVGA display panels.

■ Features
YGV638
● Text
· Displaying up to 1948 characters per screen and up to 128 characters per scan line
· Independent font selections for each character strings
· Supports proportional font
· Supports half-width font
· Scaling function
· Supports 4-bit/pixel anti-aliasing font
· Font size: 1 dot × 1 dot to 64 dot × 64 dot in increments of 1-dot independently in horizontal and
vertical direction
● Line
· Line drawn directly from specifications of start/end point coordinates
· Up to 510 lines per screen
· 32768-color (RGB555) specification or palette index (10 bits) specification
· Line width: from 1 dot to 16 dots (in one dot increments)
· Anti-aliasing drawing function
■ Video Signal Inputs
● Analog Video Input
· Compatible with composite video, S video, component video, and RGB signal inputs
· On-chip three 10bit-ADCs
· Compatible with NTSC and PAL signal formats
· On-chip video decoder
· Supports interlace and progressive scans (RGB)
· Compatible with composite sync signal inputs (RGB)
● Digital Video Input
· Compatible with RGB666, 16bit YCrCb, and 8bit YCrCb (ITU-R BT.656)
· Compatible with interlace and progressive scans
· Compatible with composite sync signal inputs
● Video Image Processing
· Scaling (the input images scaled to fit the display resolution, not a zooming function)
· Mirror flipping (through vertical axis)
· External sync mode (or free-running mode: switchable)
4GV638A21
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